Product Description
Make big fuel and keep rail pressure happy with the Industrial Injection Double Dragon 120% CP3 (Part # 0986437303DD) for the 2001–2004 GM 6.6L Duramax LB7. Built from a Bosch-based reman and calibrated for high flow, this pump is intended for serious builds with larger injectors, turbo upgrades, and proper tuning.
Fitment
- 2001–2004 Chevrolet/GMC 2500HD/3500HD, 6.6L Duramax LB7
Recommended Supporting Parts (CPP Diesel)
- Lift Pump: AirDog II-5G DF-100 (01–10 Duramax)
- Lift Pump (alt): FASS Titanium Signature 165GPH (01–10 Duramax)
- High-Flow Injectors: S&S LB7 SAC Performance Injectors or Reman Sets
- Browse All CP3 Components: GM Duramax CP3 Pumps & Components
- GM Duramax Hub: All Duramax Parts @ CPP
What It Does
- Flows ~120% over stock to support big-fuel, high-horsepower LB7 builds
- Stabilizes commanded rail pressure at load when paired with a quality lift pump
- Drop-in CP3 form factor for LB7 with correct lines and fittings
Good To Know
- Core policy typically requires a like-for-like CP3 core (LB7). See cart details.
- Professional calibration/tuning required; competition/off-road use where permitted.
UPC
UPC: 840256903164 (vendor-reported)
Specifications
| Brand | Industrial Injection |
|---|---|
| Part Number | 0986437303DD |
| Pump Type | Bosch CP3 (reman, modified) |
| Flow Increase | ~120% over stock (Double Dragon) |
| Engine | GM Duramax 6.6L LB7 |
| Vehicle Years | 2001–2004 |
| Recommended Supply | Lift pump capable of consistent 8–10 psi under load |
| Intended Use | Performance/competition (with proper supporting mods) |
| Core | Like-for-like core typically required |
| UPC | 840256903164 |
FAQ
Will this CP3 bolt onto my LB7 without custom lines?Yes, it’s an LB7-fit CP3. You’ll still need proper tuning and a quality lift pump to realize the benefits.
Do I need a lift pump?Strongly recommended. A consistent 8–10 psi supply under load helps the CP3 maintain rail pressure. See our AirDog and FASS options above.
What injectors/turbo should I pair with a Double Dragon?It’s designed for high-flow injectors and an upgraded turbo. S&S performance injectors are a proven match; consult your tuner for target mm³ and airflow goals.
Is this emissions legal for on-road use?No—this high-flow pump is intended for competition/off-road use where permitted. Check local regulations.
What about the core?Most vendors require a like-for-like CP3 core. Core value and terms are set at checkout.
